Conversion of units of energy
Encyclopedia
The SI unit for energy
is the joule
.
The kilowatt hour, or kilowatt-hour, (symbol kW·h, kW h or kWh) is equal to 3.6 megajoules.
The large calorie, kilogram calorie, dietary calorie or food calorie (symbol: Cal) approximates the energy needed to increase the temperature of 1 kilogram
of water by 1 °C. This is about 4.182 kilojoules.
Tonne of oil equivalent:
The IEA
/OECD define one toe to be equal to 41.868 GJ
or 11.63 MWh
.
A gram of TNT releases 980–1100 calorie
s upon explosion. To define the tonne of TNT, this was arbitrarily standardized by letting 1000 thermochemical calories = 1 gram TNT = 4184 J
(exactly).
Energy
In physics, energy is an indirectly observed quantity. It is often understood as the ability a physical system has to do work on other physical systems...
is the joule
Joule
The joule ; symbol J) is a derived unit of energy or work in the International System of Units. It is equal to the energy expended in applying a force of one newton through a distance of one metre , or in passing an electric current of one ampere through a resistance of one ohm for one second...
.
The kilowatt hour, or kilowatt-hour, (symbol kW·h, kW h or kWh) is equal to 3.6 megajoules.
The large calorie, kilogram calorie, dietary calorie or food calorie (symbol: Cal) approximates the energy needed to increase the temperature of 1 kilogram
Kilogram
The kilogram or kilogramme , also known as the kilo, is the base unit of mass in the International System of Units and is defined as being equal to the mass of the International Prototype Kilogram , which is almost exactly equal to the mass of one liter of water...
of water by 1 °C. This is about 4.182 kilojoules.
Tonne of oil equivalent:
The IEA
International Energy Agency
The International Energy Agency is a Paris-based autonomous intergovernmental organization established in the framework of the Organisation for Economic Co-operation and Development in 1974 in the wake of the 1973 oil crisis...
/OECD define one toe to be equal to 41.868 GJ
Joule
The joule ; symbol J) is a derived unit of energy or work in the International System of Units. It is equal to the energy expended in applying a force of one newton through a distance of one metre , or in passing an electric current of one ampere through a resistance of one ohm for one second...
or 11.63 MWh
MWH
MWH may stand for:* International Air Transport Association airport code for Grant County International Airport* MWH Global, an international water engineering consultancy* Men Without Hats, a Canadian New Wave band...
.
A gram of TNT releases 980–1100 calorie
Calorie
The calorie is a pre-SI metric unit of energy. It was first defined by Nicolas Clément in 1824 as a unit of heat, entering French and English dictionaries between 1841 and 1867. In most fields its use is archaic, having been replaced by the SI unit of energy, the joule...
s upon explosion. To define the tonne of TNT, this was arbitrarily standardized by letting 1000 thermochemical calories = 1 gram TNT = 4184 J
Joule
The joule ; symbol J) is a derived unit of energy or work in the International System of Units. It is equal to the energy expended in applying a force of one newton through a distance of one metre , or in passing an electric current of one ampere through a resistance of one ohm for one second...
(exactly).
| Unit | Exajoule 1018 J | Petajoule 1015 J | Terajoule 1012 J | Gigajoule 109 J | Megajoule 106 J | Kilojoule 103 J | joule |
|---|---|---|---|---|---|---|---|
| British thermal unit British thermal unit The British thermal unit is a traditional unit of energy equal to about 1055 joules. It is approximately the amount of energy needed to heat of water, which is exactly one tenth of a UK gallon or about 0.1198 US gallons, from 39°F to 40°F... (BTU) |
1.055 | 1,055 | |||||
| food calorie | 4.182 | 4 182 | |||||
| 1 Wh Watt-hour The kilowatt hour, or kilowatt-hour, is a unit of energy equal to 1000 watt hours or 3.6 megajoules.For constant power, energy in watt hours is the product of power in watts and time in hours... |
3.6 | 3 600 | |||||
| 1 kWh | 3.6 | 3 600 | 3 600 000 | ||||
| 1 MWh MWH MWH may stand for:* International Air Transport Association airport code for Grant County International Airport* MWH Global, an international water engineering consultancy* Men Without Hats, a Canadian New Wave band... |
3.6 | 3 600 | 3 600 000 | 3 600 000 000 | |||
| 1 GWh | 3.6 | 3 600 | 3 600 000 | 3 600 000 000 | 3 600 000 000 000 | ||
| 1 TWh TWH TWH or twh could refer to:*Tennessee Walking Horse, a breed of horse* Toronto Western Hospital, a hospital in Toronto, Canada* TWH Bus & Coach, a bus company in Romford, England* Terrawatt-hour, measure of electrical energy, 1012 watt-hours... |
3.6 | 3 600 | 3 600 000 | 3 600 000 000 | 3 600 000 000 000 | 3 600 000 000 000 000 | |
| 1 PWh PWH PWH may refer to:* Pee-wee Herman, a comic fictional character created and portrayed by Paul Reubens* Prince of Wales Hospital, Shatin, Hong Kong, China* Prince of Wales Hospital, Sydney, New South Wales, Australia... |
3.6 | 3 600 | 3 600 000 | 3 600 000 000 | 3 600 000 000 000 | 3 600 000 000 000 000 | 3 600 000 000 000 000 000 |
| 1 Toe | 41.868 | 41 868 | 41 868 000 | 41 868 000 000 |
See also
- Energy consumptionEnergy consumptionEnergy consumption is the consumption of energy or power. It is covered in the following articles and categories:* World energy consumption* Domestic energy consumption* Fuel efficiency in transportation* Electric energy consumption* Electricity generation...
- Conversion of units of temperature
- Conversion of units#Energy, work, or amount of heat
- Orders of magnitude (energy)Orders of magnitude (energy)This list compares various energies in joules , organized by order of magnitude.-SI multiples:-See also:*Conversion of units of energy*Energies per unit mass*List of energy topics*Metric system*TNT equivalent*Scientific notation-Notes:...